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Markets at a High – Should You Sell Now?

04 September 2020

“Fish gotta swim, birds gotta fly and analysts and market strategists gotta try predicting what stocks will do every year.”
Jason Zweig

In case you were unaware, US stocks recently hit a new high – right in the midst of the worsening COVID-19 pandemic. Economic conditions are dire. Businesses are collapsing. Unemployment rates are spiking. How are stock prices soaring?

Not surprisingly, CIOs, financial analysts and the financial media have been scrambling to explain just what happened. Some of the common reasons being bandied about are excess liquidity, stimulus packages and a tech bubble.

Strategists have since started recommending that investors hold cash. They predict a “second bear market” that will follow the resurgence of COVID-19 cases, and advise investors to wait until then to buy back in.

Should you follow their advice? Is there really any basis for adopting such a strategy?

What actually happens after a high?

A common misconception is that market highs are bound to quickly come back down. The term for this is “mean revert”. This likely stems from investors’ experiences with individual company stocks. Many stocks that have hit their highs are unlikely to see those same levels again for a long time. SingTel, Keppel Corp and SIA are some local examples that come to mind.

However, the same isn’t true when you’re holding thousands of stocks in a diversified indexed manner. Even if some of those stocks hit their highs and fall back down, there are always other winners in the stock market that are still doing well, boosting the overall returns of the investment.

In fact, the data shows that whenever markets hit new highs, they go on to provide decent returns over the short and medium term. And that’s the exact opposite of what many investors believe! Here is a chart showing the 1, 3 and 5 year annualised returns after markets reach a high.

Buying the dip?

One popular investment strategy adopted by many investors is to “buy the dip”. Namely, if you’re afraid to enter the market when prices are high, wait for prices to fall back down before you invest.

It seems to make sense that buying after prices dip will produce higher returns for equities. Interestingly, however, stock market data going all the way back to 1926 shows the exact opposite is true: returns after a market high are actually higher than after a dip!

How could this be? The likely culprit is momentum.

Nobel laureate Eugene Fama and Ken French documented the effect of momentum, amongst other market anomalies, in a 2008 academic paper. They noted that stocks with low returns over the past year tended to have low returns for the next few months. Similarly, stocks with high past returns tended to have high future returns. This phenomenon could not be explained by valuation theory or pricing models.

What is the Best Way to Invest in This Type of Market?

Research by passive fund giant Vanguard and their competitor Invesco shows that a lump sum investment is the best strategy to gain exposure to the market when you need to. Theory and data both suggest that lump-sum investing is the more efficient approach to building wealth over time.

This means that the best way to invest is to put all your investable funds in at once as soon as you can, regardless of what stage the market is at. In most cases, the more time you’re exposed to the market, the better off you will be.

Nonetheless, you might still be hesitant to put in all your investable funds at once. If markets have recently hit all-time highs, you might wonder if you’ve already missed your chance. You might want to wait for prices to fall before getting into the market, in hopes of catching the next high. Conversely, if stocks have just fallen and news reports suggest more declines might be on the way, you might take that as a warning sign to wait.

Driving the reactions to these two very different scenarios is the same fear: What if I invest today and the price goes down tomorrow?

Fortunately, as we’ve shown in the previous section, that fear is unwarranted. Market highs are more likely to continue rising than falling. Prematurely fleeing the market in fear and panic will only derail your best laid plans.

Instead, dollar-cost averaging could be a reasonable strategy for those who might otherwise opt to stay out of the market altogether. Going gradually into the market is better than not investing at all.

A trusted financial adviser will be able to help you decide which approach is better for you. Lump-sum investing and dollar-cost averaging each have different pros and cons. Understanding your financial goals and circumstances can help you work towards an informed decision.

What is clear is that markets have rewarded investors over time. Whichever method you decide to pursue, the overall aim is the same: develop a proper plan, and stick with it. Abandoning it or changing course half-way – such as during market highs – would only be a sure-fire way of sabotaging your progress towards your financial goals.

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GYC Perspectives

Markets are often irrational. Even among experts, forecasting does not consistently work. We instead believe in Evidence-Based Investing (EBI), which uses decades of empirical data and the greatest ideas in financial science to optimise investment outcomes. No market predictions, no forecasts, no emotions. All those things rely on gut-feel and intuition that cannot be consistently replicated.

Here, we share with you the evidence on why EBI works and why forecasting doesn't, as well as articles on topics such as behavioural finance to help you become better investors. New here? You can start with this introduction to EBI. Happy reading!

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